The time for detecting an object position for measuring a print position displacement is shortened. A printing apparatus control method includes printing, by a printing unit, an image including an object on a sheet; reading, by a reading unit, the image on the sheet on which the image including the object is printed; generating first image data according to the reading of the image by the reading unit; determining an area to detect a position of the object from second image data generated based on the generated first image data having resolution lower than that of the second image data; detecting the position of the object from the determined area; obtaining a print position based on the position of the object detected by the detecting unit; and controlling, based on the obtained print position, the printing unit to print the image on the sheet.